Centrifugal cryogenic pumps SUBTRAN

Centrifugal cryogenic pumps SUBTRAN are designed for pumping of liquid nitrogen, argon, and also liquefied natural gas under pressure of up to 20 bar. Application – in road tankers and pipelines.


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SUBTRAN cryogenic pump is a new generation device, its main advantage - it does not have lubricated bearings. Operating medium (cryoproduct) is used as lubricant.

Robust construction prevents high vibration levels and increases bearings service life. There is no need to use glands owing to the pump leak tightness.

During operation, the pump is lubricated by operating medium, so it requires almost no maintenance. Pump motor can be started or stopped at any time without waiting for it to cool down.

Peculiarities of SUBTRAN centrifugal cryogenic pumps:

  1. Balanced and machined inducer, allowing lowest possible NPSH requirement, throughout the performance curve.
  2. High efficiency closed impellers made from "lost wax" casting technology.
  3. Optimal shaped pump casing with machined axial diffuser.
  4. Aluminium cold end for light weight design.
  5. Special submerged electric motor cooled by pumped fluid.
  6. Motor bearings lubricated by the process fluid resulting in a "zero-maintenance" design.
  7. Very low noise level due to submerged design.
Applications submerged pump for liquid transfer, LNG stations, micro-bulk delivery
Liquids pumped nitrogen, argon, liquefied natural gas (LNG)
Drive type direct submerged motor
Design pressure up to 20 bar
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